When sourcing novelty lighters, the primary concern is ISO 9994 compliance, which dictates safety specifications for flame height, resistance to dropping, and extinction. For the US market, ASTM F400 standards are mandatory. You must ensure the lighters feature child-resistant mechanisms (meeting EN 13869 in Europe or CPSC standards in the US). Additionally, verify the fuel tank material (typically POM or nylon) to ensure it can withstand internal pressure and temperature fluctuations without leaking.